This article studies loan activity in a context where banks have to follow Basel Accord–type rules and find financing with the households. Loan activity typically decreases when investment returns of entrepreneurs decline, and we study which type of policy could invigorate an economy in a trough. The authors find that an active monetary policy increases loan volume even when the economy is in good shape, while the introduction of an active capital requirement policy is also effective if it implies tightening of regulation in bad times. This is performed with a heterogeneous agent economy with occupational choice, financial intermediation, and aggregate shocks to the distribution of entrepreneurial returns.